Android: There are plenty of great ways to back up your Android phone, but the new Avast! Mobile Backup makes it easy for anyone to do scheduled backups of their apps, settings, and data, and then sync all of that information to the cloud where you can quickly use it to set up a new phone.

When you chat with someone on Facebook, they can see when you've read one of their messages—even if you don't reply. Privy Chat solves this annoyance by hiding "Seen" messages when you chat on your phone.

iOS/Android: If you run out of hours in the day wishing you could make time for more important things, Chronos can tell you how much time you spend at work, home, the gym, in traffic or transit, and so on. It compiles all of the data into useful reports so you can see exactly where the hours go.

OS X: Got an app or two running down your battery? Never really sure what it is? System Lens pays attention to active processes and how much they utilize the CPU. It warns you of the greedy ones so you can keep an eye on what's killing your battery.